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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Why Dairy calves are fed powdered milk.






2. Help to signal hormone levels which we need both in the brain right next to each other.






3. (FSH) causes egg to mature in females






4. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






5. Birthing process (termination of gestation)






6. Start of the reproductive tract for the female. located outside of the body






7. 283 days






8. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






9. Parturition is controlled by...






10. ~305 days (altough often longer due to breeding difficulties)






11. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






12. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






13. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






14. (switzerland) 2nd in size and milk production - most muscle -






15. Scar tissue plugs up chambers of udder






16. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






17. Sperm production






18. Produce testosterone. located between the seminiferous tubules






19. When are dairy cattle dehorned?






20. 14-19 (17) days






21. Front feet and head first. (except for hogs and dogs)






22. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






23. Start of the reproductive tract for the female. located outside of the body






24. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






25. 19-23 (21) days






26. Look for infection - split - and rupture of the penis






27. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






28. (switzerland) 2nd in size and milk production - most muscle -






29. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






30. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






31. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.






32. 1. brain function - 2. blood flow - 3. willing female






33. Milk ~305 days - dry 60 days prior to calving






34. Milk is 15% ________ and 85% __________.






35. When are dairy cattle dehorned?






36. Failure to have both testis (gonads) descend






37. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






38. Urinary calculi.






39. 19-23 (21) days






40. 16-20 hours






41. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






42. Check feet and legs - look for masculine traits in build such as crest and muscling






43. 265-285 days






44. Sperm is produced here






45. What makes the milk flow through the mammary glands?






46. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






47. 336 days






48. Days which have increasing daylight hours

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49. Animals which have only one estrous cycle (ex: dog - fox)






50. (LH) stimulates the Leydig cells to produce testosterone